Rotary positive displacement machines based on trochoidal geometry, that comprise a helical rotor that undergoes planetary motion within a helical stator are described. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides structural and/or operational advantages in the rotary machine.

A flux machine includes a stator and a rotor. A set of electrical coil assemblies with side surfaces and sets of plural permanent magnets are arranged circularly on the stator and the rotor. Pole faces of the magnets are positioned adjacent to and spaced apart from side surfaces of permeable cores of the coil assemblies. In each coil assembly a pair of like pole faces of the magnets mutually face across the permeable core and a third magnet pole face faces transversely relative to the mutually facing pole faces of the pair of magnets.

Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.

Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.

Provided is an actuator assembly with an integrated housing for an electromechanical parking brake. The actuator assembly includes: a main housing having an integrated motor seat and an integrated gear set; a motor assembly disposed in the motor seat and providing torque; a gear assembly rotated by the torque from the motor assembly and performing a reduction function through a plurality of gears; a stator part constituting the motor assembly and at least partially formed on the inner side of the motor seat by insert injection molding; and a ring gear integrally formed with the gear seat or formed by insert injection molding and operating the gear assembly. The stator part of the motor assembly and the ring gear of the gear assembly are integrally formed with the main housing in the actuator assembly.

Provided is an actuator assembly with an integrated housing for an electromechanical parking brake. The actuator assembly includes: a main housing having an integrated motor seat and an integrated gear set; a motor assembly disposed in the motor seat and providing torque; a gear assembly rotated by the torque from the motor assembly and performing a reduction function through a plurality of gears; a stator part constituting the motor assembly and at least partially formed on the inner side of the motor seat by insert injection molding; and a ring gear integrally formed with the gear seat or formed by insert injection molding and operating the gear assembly. The stator part of the motor assembly and the ring gear of the gear assembly are integrally formed with the main housing in the actuator assembly.

The present invention discloses a novel electric motor, which comprises a stator and a rotor. The stator is a permanent magnet. The rotor comprises a rotor coil and a capacitor. The rotor coil and the capacitor are connected in series to form a resonant driving circuit. The resonant driving circuit is used to convert a natural electromagnetic field into a current to drive the rotor to rotate. The motor of the present invention can rotate without any external power, thereby solving the technical problem that the use of the external power makes a restriction to the further development and application of the motor, and solving the problem of motor energy consumption.

The present invention discloses a novel electric motor, which comprises a stator and a rotor. The stator is a permanent magnet. The rotor comprises a rotor coil and a capacitor. The rotor coil and the capacitor are connected in series to form a resonant driving circuit. The resonant driving circuit is used to convert a natural electromagnetic field into a current to drive the rotor to rotate. The motor of the present invention can rotate without any external power, thereby solving the technical problem that the use of the external power makes a restriction to the further development and application of the motor, and solving the problem of motor energy consumption.

Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.

Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.